The Commander Trilogy #1 Shadow and Gold

A once normal teenage girl trapped with the new leadership of the surviving remains of Earth? What could go wrong? But what sort of evil lies beneath the surface?
Eighteen-year-old Faith Collins watched the murder of her parents, witnessed the destruction of her home, and many others. Now given the role of commander to the orphaned survivors. She must bleed to protect each one of them. However, what she doesn't know is there's more hiding below the surface, then she would've ever thought to imagine.